The expansion of the wings varies from 1 to 1¼ inches. On the upper surface both sexes resemble some of the females of _Chrysophanus salustius_, except that the dark markings are very much broader, and the coppery colour is paler and less lustrous. On the under side the fore-wings are pale yellowish-brown, bordered with darker brown, with three black spots near the middle, and a chain of black spots beyond the middle. _The hind-wings are yellow, with a very large irregular patch of purplish brown extending over the costal and terminal portions._ This insect varies chiefly in the extent of the dark markings on the upper side, which sometimes very much encroach on the golden ground colour. The spaces between veins 2, 3, and 4, near their origin are sometimes yellow and sometimes black, but, as every intermediate form exists, cannot be distinguished as species. Mr. Fereday regards the form with the black spaces as _C. feredayi_, Bates. As previously stated, however, I am inclined to think that _C. feredayi_, Bates, is the same form as _C. rauparaha_, Fereday. {118}This butterfly is essentially a forest-loving species, and may sometimes be taken quite plentifully in sunny openings on fine days, during December and January. It is not nearly so common as _C. salustius_, and I do not think that there is more than a single brood in a season. CHRYSOPHANUS BOLDENARUM, White. (_Lycæna boldenarum_, White, Proc. Ent. Soc., Ser. 3, 1, p. 26 (1862). _Chrysophanus boldenarum_, Butl., Zool. Erebus and Terror, Ins. Lep., p. 29, n. 8, pl. 8, figs. 8, 9 (1874).) (Plate XII., figs. 13, 14, [M] varieties, 15 under side of [M], 16 [F], 17 under side of [F].) This brilliant little butterfly is very common in most localities in the South Island. In the North Island it has occurred at Lakes Wairarapa and Taupo. The expansion of the wings is 7/8 inch. On the upper side the male has all the wings brown, _tinged with the most brilliant glistening purple_. The fore-wings have two or three black spots near the middle, a curved series beyond the middle, and on the termen. The hind-wings have two black spots near the middle, a series beyond the middle, and a terminal series, generally with blue centres. All the wings are narrowly bordered with black. The female is pale yellowish-brown, the spots resemble those of the male, except that all the marginal series have bright purple or blue centres. On the under side the fore-wings of both sexes are pale yellow, bordered with slaty-blue: the spots are the same as on the upper side. The hind-wings are brownish-grey in male, slaty-grey in female, with the basal portion darker, and the spots of the upper side always indicated.